On Tue, Apr 18, 2017 at 10:57:11PM +, Bart Van Assche wrote:
> Both blk-mq and the traditional block layer support a .cmd_size field to
> make the block layer core allocate driver-specific data at the end of struct
> request. Could that mechanism have been used for the error_count field?
It
On Tue, 2017-04-18 at 08:52 -0700, Christoph Hellwig wrote:
> From: Christoph Hellwig
>
> This is for the legacy floppy and ataflop drivers that currently abuse
> ->errors for this purpose. It's stashed away in a union to not grow
> the struct size, the other fields are either used